Function abTest

abTest(
    versionA: { label: string; samples: ScoreSample[] },
    versionB: { label: string; samples: ScoreSample[] },
    alpha?: number,
): ABTestResult
Run a full A/B test comparing two agent versions across all dimensions.

Each version provides a set of ScoreSamples (one per dimension + optional "overall"). Returns per-dimension comparisons and an overall summary.
Parameters
- versionA: { label: string; samples: ScoreSample[] }
- versionB: { label: string; samples: ScoreSample[] }
- alpha: number = 0.05
Returns ABTestResult
- Defined in src/score/statisticalAnalysis.ts:383